Imitation-stitch machine.



L. W. G. PLYNT.

IMTATION STITCH MACHINE. APPLICATION FILED AUG.2,19oB.

958,91 3. Patented May 24:,190.

i di Kv m psi UNITED STATES PATENT OFFICE.

LOIS W'. G. FLYN'I, 0F ROCHESTER, NEW YORK, ASSIGNOR TO UNITED SHOE MA GHINERY COMPANY, 0F PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

mrrArroN-srrrcn MACHINE.

Specification of Letters Tatent.

Application inea August as, 190s. serial No. 450,699.

la subject of the King of England,residing at Rochester,

in the county of Monroe and State of New York, have invented certain Improvements in Imitation Stitch Ma. chines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to machines for operating u on the upper surface of 'the projecting e ge of the. sole of a shoe and is herein shown embodied in an imitation' stitch machine.

The obgect of the present invention 1s to improve the constructlon and arrangement `of the guards commonly employed'in machines of this type for preventing the upper of the shoe fromcoming in contact with the stitch impression tool.

To this end a feature of the present invention consists in the provision of a guard comprising a casing arranged about the` tool and a member arranged between the upper of the shoe and the tool and supported by said casi-ng. With this .arran ement the member between the upper and t e tool may be made very thin and -still be firmly sustained in working position, which is of advantage in that it allows the stitch impression vtool to operate further beneath the ulging portion of the upper than'would otherwise be the case. VThe the upper and lthe shoe is removably supporte by the casin in order that it may e readily renewed w en'worn out.

Other features of theinvention will be hereinafter described vin the specification and pointed out in the' claims.

In'the drawings,-Fi re 1 is a perspective view with parts bro en away of a stitch im ressi'on machine provided with a guard em odying the present invention; Fig.- 2 is a centra longitudinal sectional .view of the guard in working position; and Fig. 3 is a perspective view o the guard.

Referring to the drawin 2 indicates a frusto-eonical impressionw eel of ordinary form which is removably secured on the end of a shaft 4 and arranged to act upon the proecting edge of av shoe sole, as indicated 1n ig. 2. The main shaftv 4 1s mounted inl bushings secured in the frame of the maf member between Patented M ay 24, 1910. y

chine and is arranged to be rotated from a .I power shaft which carries fast and loose I pulleys 6 and 8. Y For this purpose a gear 10, loosely mounted on the main shaft and restrained from longitudinal movement thereon, is arranged to mesh with a pinion, not illustrated, on the inner end of the power shaft. Motion is transmitted from the gear 10 to the main shaft by means of a clutch mechanism which comprises a circular member 12 splined on the mainshaft and provided on its inner face with radial projections 14 adapted to interlock with a laterally projecting pin 16 on the gear 10 when the circular member is moved suiiiciently inward.

A bellcrank .lever is pivoted upon the frame of the machine at 18 and is arranged to move the circular member l2 into and out of operative relation with the Gear 10. To this end an arm 20 of the bellcrank lever extends upwardly and is *provided with a joke having laterally projecting pins 'arranged to work in a peripheral slot in the circular member and a spring extending between the arm 20 and the frame 'of the machine serves to normally hold the circular member in operative osition. The other u-rm Q2 of the bell-cran lever may be actuated by a suitable treadle to throw the clutch mechanism lout of operation.

The 'Work is Supported in engagement with lthe impression tool upon a rotary table 24:

arranged upon a support 26. The support 26 is mounted forangular adjustment upon the end of a lever 28 which is pivoted upon a horizontal axis at.30. A piston 32, work- I ing in a cylinder 34 secured to the frame of the mach1ne,.serves to sustain the support 26. A rod 435 rigidly secured to the piston extends downwardly therefrom and is slidingly mounted in a bushing 3G adjustabl 'secured in the lower end of the cylinder.

coil spring 38 arranged Yin the cylinder between the piston and bushing serves td press the rotary table upwardly in order to hold the work in yielding engagement with the" impression Itool. The rod 35 is arranged to be actuated by a preliminary movement of the treadle to ower the rotary table in order [to permit the insertion of the work between the impressiontool and the table.

,The `above machine has been described in order .to disclose the constructionand arrangement of a well-known form of stitch impression machine to which the present invention is adapted to be applied, but it will be understood that the invention hereinafter described is not limited foruse with a machine similar to that above referred to.

In the present embodiment of the invention a tubular casing 40 is removably 'secured by a set-screw 42 upon one of the bushings, in which the main shaft is journaled and extends over the impression tool with its outerl edge positioned back of the front face of the tool. A set screw 44, threaded into the frame of thel machine, is arranged to be engaged by the tubular casing in order to limit inward movement of the latter and thus assist the operator in properly positioning the casing longitudinally of the tool. The lower front portion of the casing below its'center is cut-away in order to expose the impression tool. As will appear from an inspection 'of the drawing, this portion is cut-'away so as to form an openingy which is defined by surfaces 46 extendin rearwardly and upwardly in sub` stantia parallelism with the lower surface of the im Yression tool, and a substantial vertical sur ace v48 which intersects the sur faces 46. f

A thimble 50, formed of thin material, is removably fitted within the casing with its closed end arrangedv between the upper of the shoe and the impression tool, and a portion of the thimble below its center is removed by a cut extending rearwardly and upwardly to form an opening which 'registers with the' opening in the casing. It will be seen thatI by forming the openin in the casing below its center the casing su iciently surrounds the thimble to prevent any downward displacement vof the latter.

A hollow. screw 52 extending transversely through the casing'and an opening in thev thimble servesv to prevent longitudinal displacement of the thimble. Upon unscrewing the screw 52, the thimble may be readily removed from the tubular casing. A stop 54, depending fromv the inner surface of the casing, serves to limit the inward movement of `thethimble, and thus assist theloperator in properly positioning the thimble within the casing. A ange '56 extending `laterally ,from the stop 54 serves to" assist 1n prevent-- ing downward displacement of the thimble.

The impression tool is preferably heated,

and for this purpose there is preferably provided a burner 58 which projects outwardly from the frame of the machine through a slot 6() extendin longitudinally through the lower portion Yo the casing. The burner is supplied with gas in any suitable way,

l It will be noted, in the construction shown', that the thimble may be formed of very thin i material and still be firmly sustained I'inworking position, which allows thev tool to -operate farther beneath the bulging portion o fitted in said casing and having a thin wall varranged between the upper of the shoe and lsaid tool.

ledge of the sole of the-shoe, a casmg over said casing.

name to this yspecification in the they u per than would otherwise be the c ase. l hen the thimble becomes worn out it may be replaced by a new one, and the provislon of the stop 54 allows the operator to readily placethe new thimble in the position occupied by the previous one, so that the thlmble will be properly positioned in relation to the impression tool. Upon loosening the set screw 42, the tubular casing may be removed, when, for example, it is desired to cleanvthe impression tool or to substitute anew tool in place of' the old one. The set screw 44 in the frame of the machine serves .to assist the operator in replacingthe casing 1n `ts original position.- A l .Ilaving described my invention, what I claim as new and desire to secure by Letters Patent of the United States is; l.. A machine of the 4class described, havmg in combination, a tool formed to operate upon the upper surface of the projecting edge of the sole of a shoe, a stationary casing about the tool, and an inner shell removably 2. A machine-of the class described, having in combination, a tool formed .to operate upon the upperV surface of the projecting said tool with its outer end back of the front face of the tool anda member of thin material arranged between the u per of the shoe and said tool and removab ysecured in 8 A machine of the class described, havv ing 1n combination, a tool formed to operate upon the upper surface of theprojecting Aedge ofthe sole of a shoe, a stationary casing removably `sustained labout the tooland an inner shell removably fitted in said casing and having a thin wall arranged between the upper of the shoe and said impression tool.

4. A machine of the class described, having in combination, a tubular member, 'a shaft arranged to rotatey therein and provided at its end withga rotaryl tool formed to operate Vupon the" upper surface of Vthe projecting edge of the s ole of a shoe, a tubular casing. arranged on said 'member with its outer end back. of lthe front face'of` the tool, and a member; of thin' material arranged between the upper of the shoe and said tool and removably sustained by said casing.

Intestimony 4whereof I have signed my presence of two subscribing witnesses.

kLouis w. e. AFLYNT.

. Witnesses:

IRvING E. BOOTH,

Hanauer Lunar.4 

